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fzus63 kmqt 091355
glfls 
expires:202004092200;;824363

open lake forecast for lake superior
national weather service marquette mi
955 am edt thu apr 9 2020

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...as low pressure of 29.4 inches south of james bay 
deepens to 29.0 inches while tracking southeast toward new 
england today, it will extend a 29.6 inch trough back to northern 
ontario and lake superior. meanwhile, high pressure of 30.3 inches
will build into the dakotas today. although this high will drop 
to the tennessee valley by friday evening, it will extend a 29.9 
inch ridge to lake superior late friday afternoon and night. as 
this ridge shifts east on saturday, a 29.7 inch trough will 
approach lake superior. this trough will cross lake superior 
saturday night. on sunday, 29.4 inch low pressure will organize 
over the southern plains. this low will deepen to 29.2 inches as 
it lifts northeast, crossing lower michigan sunday night and 
monday morning. by monday evening, the low will be located south 
of james bay at a pressure of 28.8 inches. 


lsz162-092200-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
955 am edt thu apr 9 2020 /855 am cdt thu apr 9 2020/

.rest of today...northwest winds 15 to 25 knots increasing to
20 to 30 knots in the afternoon. isolated snow showers. waves
3 to 5 feet occasionally to 7 feet subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.friday...northwest winds 10 to 20 knots becoming west 5 to
15 knots in the afternoon, then backing south late. waves
subsiding to calm to 2 feet. 
.friday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming west 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots veering north
after midnight. waves calm to 2 feet. 
.sunday...north winds 5 to 15 knots increasing to 15 to 25 knots.
a chance of rain and snow showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...northwest winds 20 to 30 knots. a chance of snow
showers. waves building to 4 to 7 feet occasionally to 9 feet, 
then subsiding to 2 to 4 feet. 

$$
fzus63 kmqt 091355
glfls 
expires:202004092200;;824364

open lake forecast for lake superior
national weather service marquette mi
955 am edt thu apr 9 2020

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...as low pressure of 29.4 inches south of james bay 
deepens to 29.0 inches while tracking southeast toward new 
england today, it will extend a 29.6 inch trough back to northern 
ontario and lake superior. meanwhile, high pressure of 30.3 inches
will build into the dakotas today. although this high will drop 
to the tennessee valley by friday evening, it will extend a 29.9 
inch ridge to lake superior late friday afternoon and night. as 
this ridge shifts east on saturday, a 29.7 inch trough will 
approach lake superior. this trough will cross lake superior 
saturday night. on sunday, 29.4 inch low pressure will organize 
over the southern plains. this low will deepen to 29.2 inches as 
it lifts northeast, crossing lower michigan sunday night and 
monday morning. by monday evening, the low will be located south 
of james bay at a pressure of 28.8 inches. 


lsz263-092200-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
955 am edt thu apr 9 2020

.rest of today...northwest winds 20 to 30 knots. scattered snow
showers. waves 3 to 6 feet occasionally to 8 feet. 
.tonight...north winds 20 to 30 knots diminishing to 15 to
25 knots late. isolated snow showers through midnight. waves
building to 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 10 to 20 knots becoming west 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...south winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots veering west by mid
afternoon. waves calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots veering north
after midnight. waves calm to 2 feet. 
.sunday...north winds 5 to 15 knots increasing to 20 to 30 knots
late. a chance of snow showers, possibly mixed with rain. waves 
building to 5 to 8 feet occasionally to 10 feet. 
.monday...north gales to 40 knots backing northwest. a chance of
snow showers. waves building to 6 to 9 feet occasionally to 11 
feet, then subsiding to 3 to 5 feet occasionally to 7 feet. 

$$

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